Porcelain heating-unit bracket



Dec 21 1926. 1,611,769

A. J. MOTTLAU PORCELAIN HEATING UNIT BRACKET Filed Jan 16. 1923 W (5118,9565 [722" anior:

Maya s2 Jj lafii a fl M Patented Dec. 21, i926.

UNITED STATES PATENT OFFICE.

AUGUST J. MOTTLAU, OF JENKINTOWN, PENNSYLVANIA, ASSIGNOR TO A. MECKY COMPANY, OF PHlLADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

PORCELAIN HEATING-UNIT BRACKET.

Application filed. January 16, 1923. Serial No. 613,018.

This invention relates to electric heaters or toasters and particularly to improvementsin the toasters shown in the United States application of Alice Lee Mottlau, filed September 29, 1920, Serial No. 413,515 for duplex toasters, and the United States'application of August J. Mottlau, filed February '17, 1922, Serial No. 537,289, for electric cookers and toasters, though itis noted that the invention is not limited to toasters, nor in some respects even to electrical devices. One object of the invention is to provide, in an-apparatus or device of this kind, easily and conveniently removable and replaceable heating unit supports.

Other objects of the invention are to provide, in an apparatus or device of this kind, eflicient arrangements of mounting and connecting the heating unit supports Other objects of the invention are to improve generally the simplicity and efiiciency of such devices and to provide a device or apparatus of this kind which is durable,

economical to manufacture and operate and which will not get out of order.

For the accomplishment of these and other objects my inventions are embodied in an improved toaster or heater which, briefly stated, comprises a base which has oppositely mounted standards thereon, each standard carrying a heating unit mounting consisting of an insulating support provided with conductor contact receiving openings,

and an insulating heating unit comprising a coil-supporting core having an integral sup porting bracket adapted to be received against the inner side of the insulating support. The bracket is provided with coil contact openings aligning with the said conuctor cont-act openings.

Other objects of the invention will appear as the description proceeds; and while herein details of the invention are described, the invention is not limited to these, since many and various changes may be made without departing from the scope of the invention as claimed.

In the accompanying drawing, showing by way of example one of many embodiments of the invention, Figure 1 is a front elevation of my electric heater or toaster, showing one half in axial section. Fig. 2 is an axial vertical sectional view of the mounting, showing the heating unit core in elevation.

( Fig. 3 is an outer end view of the mount- Fig. 4 is a top view ofFig. 2.

Fig. 5 is a view of the heating 'unit from the bracket side.

Fig. 6 is a view showing the connection of the core supporting arms to the contact pins. In the drawings my toaster is shown as comprisinga disk base 10 having anoutwardly and downwardly extending flange 11 forming a space 12 under said base, and provided with passages 13 therethrough at opposite points. Legs 15 attached to the under side of base 10 support it in horizontal position. Outwardly and upwardly extending hollow standards 16 are oppositely mounted on the flange 11 and communicate with space 12, one of said standards having a conductor opening 17. The upper inner wall of each standard is provided with a large support opening 20, and the outer wall with a perforation 21 opposite the lower port opening 20.

An insulating heat unit support 25 is received in the opening 20, comprising an upper conductor connection portion provided wit-h an inwardly projecting shoulder 28 and havin two contact receiving openings 26 enlargecf at their outer ends 27 and a lower portion having a countersunk opening registering with said perforation 21, and vertical parallel channels 36 on its outer face. A handle 38 having an internally threaded recess 39in its inner end is attached to the outer side of said standard by means of a screw 37 passing through the base opening 35, outer wall perforation 21, and into said threaded recess 39 to securely hold support 25, standard 16 and handle 38 in assembled position. 'Contact bushings 40 are received in openings 26 having inner tubularends 41 and outer shouldered heads engaging in the enlarged outer ends 27 of openings 26; said heads being rovided with 'a circumferential groove 42. lectric conductors passing through said conductor openin 17, through the channels 36, have their en s disposed in part of the sup- .the groove 42 of bushing 40.

are coil contact spring pins 43 having split ends 44 frictionally received in the tubular ends 41 of bushingthe opposite ends 46 of' pins 43 having attached thereto, as shown in Fig. 6, coil conductor and supporting arms 80, between which arms is mounted an insulatin core 90 having a spherical gr ove 91 on its outer surface. Disposed in said groove 91 there is wound an electric heating coil 95 having its ends secured to said arms 80.

I claim:

1. In combination, standards, electric Wires appurtenant to the standards and connected to a supply of electricity; a plurality of brackets and body portions connected thereto and supported by the standards for providing'support for heating elements; each of said connected brackets and body portions comprising a dielectric block-bracket having openings therein, a cylindrical dielectric body portion having a spiral groove in the surface thereof, and a dielectric stem formed integrally with the block-bracket and body portion for connecting the blockbracket and body portion and spacing them away from each other; electrically conductive means disposed in said openings of the brackets and operatively connected to said wires; heating elements disposed in said grooves of the body portions; and metallic brackets secured to the body portions and to the conductive means of the block-brackets for operatively connecting the heatingelements and said. conductive means.

2. In combination, an insulating support having openings therethrough; conductor contact sleeves in said openings; an insulating heat unit having a bracket disposed at right angles to the longitudinal axis of said u-nit received against said support and provided with openings therethrough in alinement with said support openings; and contact pins mounted in said bracket openings and-engaging insaid sleeves to maintain said unit in removable electrical contact with said support. I

3. In combination, an insulating support having openin s therethrough en arge at their outer ends; contact bushings having tubular ends received in said openings an enlarged circumferentially grooved heads disposed in the enlarged outer ends of said openin s; electric conductor wires disposed in said grooves; an insulatin heat unit mounting having an offset brac et disposed at right angles to the longitudinal axis of said unit received against said support and provided with openings therethrough in alinen'ient with said support openings; and Contact pins mounted in sand bracket openings having split ends frictionally received in said tubular ends to maintain said unit in removable unexposed electrical contact with said support.

4. In combination, an insulating support having openings therethrough; and an in sulating heat unit mounting having an, integral ofi'set bracket disposed at right angles to the longitudinal axis of said umt received against said support and provided with openings therethrough in alinement with said support openings to form unexposed contact openings.

5. In combination, an insulating support having openings therethrough; an insulating heat unit mounting having a bracket disposed at right angles to the longitudinal axis of said unit received against said support and provided with openings therethrough in alinement'with said support openings to form unexposed contactchambers; and frictionally engaging contacts in said openings to removably maintain said unit in contact with said support. v

6. In combination, a hollow standard having a large support opening and an outer wall having a perforation opposite the lower part of said support opening; an insulating support received in said opening having contact passages and a base opening; a handle having a threaded recess in its inner end; a screw passing'through said base opening, outer wall perforation, and into said recess to securely hold said support, standard and, handle in assembled osition; a heat unit mounting received against said support having a bracket provided with passages therethrough in alinement with said sup ort passages; and means in saidpassages or maintaining said unit in position against said support for forming an electrical contact.

7. In combination, a hollow standard having a large support opening and an outer wall having a perforation opposite the lower part of said support 0 ening; an insulating support received in sai opening having contact passages and a base opening; a handle having a threaded recess in its inner end; a screw assing through said base 0 ening, outer wal perforation, and into sai recess to securely hold said support, standard and handle in assembled position; a heat unit mounting received a ainst said support'having a bracket provided with passages therethrough in alinement with said support passages; conductor contact sleeves in said support passages; and contact pins in said bracket passages frictionally engaging in said sleeves to maintain said unit in removable electrical contact with said support.

' AUGUST J. MOTTLAU. 

